1212220111012 has 24 divisors (see below), whose sum is σ = 2146802144256. Its totient is φ = 598877651808.

The previous prime is 1212220110979. The next prime is 1212220111021. The reversal of 1212220111012 is 2101110222121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3533583 + ... + 3861430.

It is an arithmetic number, because the mean of its divisors is an integer number (89450089344).

Almost surely, 2^{1212220111012} is an apocalyptic number.

It is an amenable number.

1212220111012 is a deficient number, since it is larger than the sum of its proper divisors (934582033244).

1212220111012 is a wasteful number, since it uses less digits than its factorization.

1212220111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7395507 (or 7395505 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212220111012 its reverse (2101110222121), we get a palindrome (3313330333133).

The spelling of 1212220111012 in words is "one trillion, two hundred twelve billion, two hundred twenty million, one hundred eleven thousand, twelve".